Whiskey sour

• 1.5 to 2 ounces bourbon (Bulleit)
• 3/4 ounces lemon juice
• 3/4 ounces simple syrup or 1/2 demerara syrup
• (optional) egg or auqafaba (1/2 ounce)
• bitters

1. Add all ingredients to a shaker. Shake for 10 seconds.
2. Add ice and shake.
3. Double strain into a cocktail glass.